whiteave^.j fossils of hamilton formation of ontario. 363 



Supposed bundles of spicules. 



Two specimens, which Mr. Schuchert thinks are " anchoring bundles of 

 spicules," were collected by him, in 189-5, in the "Middle third of the sec- 

 tion" at Thedford. Both are No. 26,462 of the United States National 

 Museum Catalogue of Invertebrate Fossils. The more perfect of the two 

 is a bundle of extremely slender and apparently simple spicules, upwards 

 of an inch in length, forming a, nearly cylindrical, narrow and densely 

 aggregated mass at one end, but flattened, spreading and moderately 

 expanded at the other. 



Supposed Cliona borings. 



Twelve specimens of Spirifera penncUa, Atwater ( = S. mucronata, Con- 

 rad) collected by Mr, Schuchert from the "Upper third of the section" at 

 Thedford, show peculiar markings which he thinks are " Cliona bo- 

 rings ." For the greater part of their length these markings are rather 

 minute grooves tlian burrows, but this circumstance is probably due to the 

 exfoliation of the outer layer of the test of each of the Spirifers. These 

 twelve specimens are No. 26,463 of the United States National Museum 

 Catalogue of Invertebrate Fossils. 



ANTHOZOA. 



Alcyonaria. 



AuLOPORA serpens (Goldfuss) Rominger. 



Auiopora serpens (Goldfuss) Rominger. 1876. Geol. Surv. Mich., Fassil Corals, 

 p. 86, pi. 33, fig. 2. 



Numerous specimens of a creeping, parasitic, auloporoid coral, which 

 Mr. Schuchert has identified with this species, and which certainly agree 

 very well with Rominger's description and figures of it, have been 

 collected near Thedford and at Bartlett's 'Mills. Mr. Lambe, however, 

 thinks that these specimens are merely young colonies of a species of 

 Syringopora, and it is obvious that their internal structure is essentially 

 as in that genus. 



In his first report on the Palaeontology of the Province of Ontario, 

 Professor Nicholson refers a coral, which he says is "common in the 

 Hamilton formation of the Township of Bosanquet, adhering to brachiopods 

 and corals," — to the Auiopora cornuta of Billings. Upon the strength of 

 this identification the name of A. cornuta was inserted in a previous list of 

 the fossils of this formation. But the types of A. cornuta are from the 

 Corniferous limestone, and Mr. Lambe, who has recently studied their 



